package dfbz.com.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter({"/user/*","/view/*","/article/*","/dept/*","/home/*","/meet/*"})
public class LoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        Object obj = request.getSession().getAttribute("userId");
        if (null != obj) {
            filterChain.doFilter(request, response);
        } else {
            String uri=request.getRequestURI();
            //view 下面有两个不需要拦截的，showRegister和forget
            if (uri.contains("showRegister")||uri.contains("forget")){
                filterChain.doFilter(request,response);
            }else {
                response.sendRedirect(request.getContextPath() + "/");
            }
        }

    }

    @Override
    public void destroy() {

    }
}
